F350 and Code PO402

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Aug 27, 2012 | 12:35 PM

65Fastback347

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F350 and Code PO402

I just had the EGR valve replaced and the truck ran great for about a week, now I have a new code showing up (po402). I looked it up and shows that it is an excessive flow issue. I was quoted $190 for the back pressure sensor and $46 for the installation. I just wanted to check and see if this is likely to be problem and if the price is fair. I tried searching the forums for a similar situation to mine, but I did not find one (please forgive me if this is a repost, I did try to search it first).

My truck is '04 F350 6.0 and is totally stock (not even a K&N)

Thank you in advance

Aug 27, 2012 | 01:03 PM

metmop

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From: Orlando, FL

The $46 sounds like either a half hour or a hour depending on rates. More than likely it is the minimum charge. The price of the sensor seems a little high. Depending on which exhaust sensor they are talking about they run from $50 to $230 depending on if you have a late or early model 2004. But the MSRP on EGR pressure Feedback sensor is $107.69 as per

Official Ford Parts Site | Buy Motorcraft & OEM Ford Parts Online | FordParts.com

If that is the actual problem without a set of guages or a code reader capable of reading ford PIDs it is hard to say.

Aug 27, 2012 | 01:19 PM

65Fastback347

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I borrowed a MAC Mentor from a friend, so I am not sure if it will be able to do it ( i know it will read the codes). I think it is an early '04 because it was purchased in January of 2004.